Emergency valve structure for locomotive boilers and the like



June 12, w MATSQN EMERGENCY VALVE STRUCTURES FOR LOCOMOTIVE BOILERS AND THE LIKE Filed Oct. 24, 1942 f :4 II/IIII/I zyfyv f n WWI M gs Patented June 12, 1945 EMERGENCY VALVE STRUCTURE FOR LGCOMOTIVE' BOILERS AND THE LIKE.

Westy F..Matson, Newton,.Kans. Applicationoctober. 24, 1942; Serial No: 463,240

zzclaims.

This. invention relates to. an emergncy valve structure for locomotive boilersand thelike, and it is particularly an. object. of the. invention to provide means whereby in. the. event of. an accident,.or for any other cause, the. engineer or other person can readily cut off. the supply of. steam or kindred fluid.

It is also. any object ofthe}. invention to provide avalveof. this kind whichcan be. usedwithequal facility in connection, with a portable or sta-- tionary boiler,. and wherein, is, provided manually I operatedmeans for shutting off the steamor other fluid in the'event of an emergency, and thereby avoiding injury to the engineer or. other person.

The invention consists in the details, of. construction and in they combination and arrangement of. the several parts; of my improved emergency valve whereby certain. important advanterior. of the chest" C- through theport'or-opening lprovided in' the back'wall of the chest C. 1

The passageway or conduit Wis-indirfectcommunicationwith the chestC throughaport" fl in' whichis threaded or otherwise engaged a' valve core-orseati withwhich" coact's'a valve member arranged within the adjacent end portion of the passageway or conduit" 2; Thisvalve member ii is: urged toward: itsi'seat' 5* by an; expansible-coil spring 'l of requisitetension interposed between the" valve member 6' and the adjacentwallof the passageway or conduit 2; 'lll'iisjadiflcentp rtion of the conduit or passageway- 2 isformed to provide awell'fi toailowifor sufilcient'movement tages are attained, as will. be. hereinafter more fully set forth.

In order that my inventionlmay be thebetter) understood, I' will. now proceed todescribe the same. withrefere'nce to the accompanying drawing, wherein:

Figure 1'. is. a View in elevation and of a diagrammaticv character illustrating an emergency.-

valve structure embodying the. invention.

Figure. 2 is. an enlarged. sectional view taken substantially on the line. 2- -2 ofFigure. 1",. looking in the. direction of the arrows, and.

Figure 3 is an. enlarged. sectional. view taken. substantially on. the line. 39-3 of Figure; 1,' lookinginthedirectionof the. arrows.

embodiment of the invention the chest C is hori zontally arranged and one end portion provided exteriorly thereof with a passageway or conduit 2 in direct communication with the boiler B, and also in communication with the chest C are the usual pipes 3 leading to the steam or fluid consuming devices. Thispassageway or conduit 2 is formed within an outstanding part a rigid with the back wall of the chest C, said part extending within the boiler through a suitably provided elongated opening I) provided in the head I of the boiler. This passageway or conduit 2 has its outer end opening within the boiler While the v opposite end is in communication with the inof the valve member" 6' and an effectiveplacement' The-valve member 6 is mounted upon the insorted end portion of an elongated stem 9 which extends through the port 4 and through a guide bushing Ii] threaded-through a properly positi-on'ed" opening II in the outer face wall of the chest C. This stem H m the present embodiment of the invention is of a-length to' have its outer end portion at alltimes disposedbeyond the-outer end of'the-applied guidebushing I'Ilso that'th'e same may have effective contact with thetrigger head or block I2 for holding't-hevalve member 6 in open position and the spring T under'sufficient tension to move the valve-member 6 into closed position upon release ofthe head orblock I2 fromthe stem 9; The trigger heador block- I2 is provided with an upstanding trip'lever M of desired length and to the upper end portion of which is-connected, asat I5; the*flexible members it leading tosuch locations desired. Whenused in connection with a train there are-preferably threeof such fiexiblemembers; two leading to the sides of the engine cab and a third one extending along" the train so that-the same can-be readily pulled by the" brakeman at" any-point along the train to swing the trigger head or block I! to release the valve 6.

As is clearly illustrated in the accompanying drawing, the trigger heador block- I2 is supported for rocking movement between'the outstanding lugs I! carried by the outer face of the guide bushing I0 through the medium of a pin I 8'. This mounting for the trigger head or block I2 is to one side of the stem 9 a distance sufficient to allow the inner or working end of the head or block I2 to only partially overlie the adjacent end of the stem 9 so that but slight rocking movement of the'head or block I2 will be required to release the stem 9. It is also preferred, as i1- lustrated in the accompanying drawing, that the inner or working end of this block or head l2 be inwardly beveled thereacross, as at l9, to further facilitate quick disengagement of the point or tip of the head or block i2 which is formed by such beveling from the stem 9.

The inner wall of the chest C, as herein disclosed, is provided with an inwardly disposed block 28 in which is slidably received a gate valve 2| which is adapted to be moved outwardly to intersect the passageway or conduit 2 in advance of the port 4 so that flow of steam or kindred fluid may be readily shut off when it is desired to reset into open position the valve member 6. This gate valve 2| carries a stem 22 of a length to extend outwardly and beyond the outer wall of the chest C whereby the valve 2| may be readily shifted into either its closed or open position.

The back wall of the chest C, or that wall provided with the port 4, is also provided with a port in registry with a corresponding port in the head I of the boiler B and which constitutes an emergency passage and which is normally closed by the inwardly opening valve member 23. This valve member 23 carries a stem 24 of a length to extend through and beyond the front face of the chest C so that the valve member 23 may be readily opened or closed.

In view of the foregoing, itis believed to be readily apparent that the emergency valve structure as herein embodied constitutes a unit which can be readily applied in working position after the proper openings have been made in the boiler head I or kindred wall.

It is to be further stated that in practice it is desired that certain of the flexible members It extend to and be secured to the tender of the locomotive so that in the event the engine and tender should separate when a train is in motion, the head or block 12 will be operated to release the stem 9. While the invention as herein disclosed is especially advantageous for use in connection witha locomotive, it is to be stated that it can also be used in connection with a marine engine or with any other type of portable or stationary engines using steam, compressed air and the like.

From the foregoing description it is thought to be obvious that an emergency valve constructed in accordance withmy invention is particularly well adapted for use by reason of the convenience and facility with which it may be assembled and operated.

I claim:

1. The combination with a wall of a fluid receptacle, the wall having an opening therethrough, of a valve unit consisting of a chest adapted to be secured to said wall over the opening, a chambered part integral with the chest and adapted to extend through the opening into the receptacle, a port opening between the chambered part and the chest and forming a valve seat, a port opening through said chambered part, means forming a valve stem guide secured in a wall of the chest in alinement with said port, a pair of spaced ears carried by said guide outside the chest, a valve stem slidable through the guide and having an end extended outwardly between said ears, the other end of the stem extending through said port into the chambered part, a valve carried in the chambered part on the said other end of the stem for engagement on the seat, resilient means urging the valve toward said seat, a pivot supported between said ears at one side of the axis of the valve stem, a trigger head supported on said pivot for oscillation, the head having a beveled end face forming a pointed tip having detachable engagement with stem against the action of said resilient means,

said beveled face facilitating the free outward} movement of the stem when said tip is moved inwardly against and across and out of engagement with the said end of the stem, and a control lever carried by said head for oscillating the same to release the stem.

2. The combination with a wall of a fluid receptacle, the wall having an opening therethrough; of a valve unit consisting of a chest adapted to be secured to said wall over the opening, a chambered part integral with the chest and adapted to extend through the opening into the receptacle, a port opening between the chambered part and the chest and forming a valve seat, a port opening through said chambered part, means forming a valve stem guide secured in a wall of the chest in alignment with said port, a pair of spaced ears carried by said guide outside the chest, a valve stem slidable through the guide and having an end extended outwardly and terminating between said ears, the other end of the stem extending through said port into the chambered part, a valve carried on the other end of the stem in the chambered part for engagement on said seat, resilient means urging the valve toward said seat, a pivot supported between the ears to one side of the axial center of the valve stem, a trigger head comprising a blocklike body supported on said pivot for oscillation, the head being beveled in a plane oblique to the length of the stem to form a pointed tip having engagement against the adjacent end of the stem whereby upon oscillation of the head in one direction the tip will move off of the stem end permitting the stem to move outwardly across the beveled portion of the head, and means connected with the head for facilitating the oscillation of the head to disengage the tip from the stem.

WESTY F. MATSON. 

